Perhaps you should try some spelling variations:
a documentation » _ documentation, fao documentation
documentation a » documentation _, documentation fast
kumar 1936 » kumar 1938, kumar 1937, kumar 1923
kumar 1935 » kumar 1938, kumar 1937, kumar 1923
omar 1938 » omar 1940
a curtan » a curran, _ curtain, _ cartan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((kumar 1936) or (omar 1938))) or (kumar 1935)) a documentation a curtan-metragem~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((kumar 1936) OR (omar 1938))) OR (kumar 1935)) a documentation a curtan-metragem.
• Adding a wildcard symbol may retrieve word variants: ((((kumar 1936) or (omar 1938))) or (kumar 1935)) a documentation a curtan-metragem*.